Control Modules In The Control Area Network
The number of control modules in the CAN varies depending on the level of equipment, the vehicle model and the structure week.
NOTE:
To troubleshoot respective CAN-net, see troubleshooting for CAN-related diagnostic trouble codes for Central electronic module. For example, choose any of CEM-DF01 - DF17 depending on CAN-net.
| Explanation | ||
| = | CAN Low speed section. Contains the control modules located in the passenger compartment and cargo compartment. | |
| = | CAN High speed section. Contains the control modules located in the engine compartment. | |
| Slave control module | = | A control module with low computing power which is connected to a "master control module" and which only operates on commands from the master control module. |
| Option | = | Accessories installed at the factory to order, when purchasing a new car. |
| Accessories | = | Aftermarket installation. |
| Control module | Name/ Function | Network | Miscellaneous |
| Additive dosing module Controls the dosage of the fuel additive to the main fuel tank. |
Diesel engines only | ||
| Accessory electronic module Controls certain accessory functions for the vehicle. The interface for a non-Volvo aftermarket alarm for example. |
Accessories | ||
| Brake control module Regulates brake system functions |
Has body sensor cluster stability sensor as slave module. | ||
| Climate control module Controls the climate control system functions and communicates with the other modules via the network low speed sector. |
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| Central electronic module Is the network main control module and the interface between the high and low speed sides. The control module has an overall function in the electrical system. |
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| Combustion preheater module Controls the parking heater function. |
Option /accessory. Market dependent |
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| Convertible roof module Controls the function of the retractable roof. |
only | ||
| Driver's door module Controls the driver's door functions and certain functions in the other doors. |
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| Differential electronic module Controls four wheel drive engagement and communicates with the other modules via the high speed side of the network. |
Vehicles with only. | ||
| Driver information module Controls combined instrument panel functions. The control module contains one of the two terminal resistors for. |
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| Engine control module Controls engine functions. The control module contains one of the two terminal resistors for. |
Different versions depending on the engine alternative. | ||
| Electronic power steering module Controls power steering function. |
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| Infotainment control module Controls audio and navigation functions. The control module is also the main control module in the MOST network. |
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| Keyless vehicle module Controls functions for the keyless entry system. |
Option | ||
| Parking assistance module Controls functions for the parking assistance system. |
Option /accessory | ||
| Passenger door module Controls functions in the passenger side door. |
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| Phone module Controls phone functions. Part of the infotainment system. |
Option /accessory. Available in various configurations. |
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| Power seat module Controls the positions and functions of the driver's seat. |
Standard/ option
NOTE:
The power seat module does not control seat heating or the SIPS airbag function. |
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| Power seat left module Controls the function for electrically operated left front seat. |
Option in.
NOTE:
The power seat left module does not control seat heating or the SIPS airbag function. |
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| Power seat right module Controls the function for electrically operated right front seat. |
Option in.
NOTE:
The power seat right module does not control seat heating or the SIPS airbag function. |
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| Supplemental restraint system module Controls the vehicles supplemental restraint system. The control module contains one of the two terminal resistors for. |
Has occupant weight sensor as slave module to check whether anyone is sitting in the passenger seat. | ||
| Steering wheel module Receives signals from the switch in the steering wheel and from the controls around the steering wheel. The control module contains one of two terminal resistors for. |
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| Transmission control module Controls the automatic transmission function. |
Vehicles with automatic transmission only. | ||
| Trailer module Controls trailer functions. |
Option Applies only to cars with a tow hitch. |